What determines whether you need OS or STD rings? Is this based solely on cyl diameter? thanks
L lprete · Registered Joined May 17, 2010 · 7 Posts Discussion Starter · #1 · May 23, 2010 Only show this user What determines whether you need OS or STD rings? Is this based solely on cyl diameter? thanks
A aaronrkelly · Registered Joined Dec 18, 2007 · 2,556 Posts #2 · May 23, 2010 Only show this user yes...
M Munkey990 · Registered Joined Oct 25, 2009 · 78 Posts #3 · May 24, 2010 Only show this user OS requires the cylinder to be bored and OS pistons installed.